////////////////////////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2009, Daniel Kollmann
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are permitted
// provided that the following conditions are met:
//
// - Redistributions of source code must retain the above copyright notice, this list of conditions
//   and the following disclaimer.
//
// - Redistributions in binary form must reproduce the above copyright notice, this list of
//   conditions and the following disclaimer in the documentation and/or other materials provided
//   with the distribution.
//
// - Neither the name of Daniel Kollmann nor the names of its contributors may be used to endorse
//   or promote products derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
// WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
////////////////////////////////////////////////////////////////////////////////////////////////////

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using Brainiac.Design.Nodes;

namespace Brainiac.Design
{
	public partial class NodeViewData
	{
		/// <summary>
		/// A subitem used to draw a connector on the node.
		/// </summary>
		public class SubItemConnector : SubItemText
		{
			protected Connector _connector;

			/// <summary>
			/// The connector represented by this subitem.
			/// </summary>
			public Connector Connector
			{
				get { return _connector; }
			}

			protected BaseNode _child;

			/// <summary>
			/// The child attached to the connector and represented by this subitem.
			/// </summary>
			public BaseNode Child
			{
				get { return _child; }

				set
				{
					_child= value;

#if DEBUG
					// ensure that the child is indeed connected over the given connector
					if(value !=null)
						Debug.Check(_connector.GetChildIndex(value) >=0);
#endif
				}
			}

			protected int _index;

			/// <summary>
			/// The index of the child in the connector.
			/// </summary>
			public int Index
			{
				get { return _index; }
				set { _index= value; }
			}

			protected override string Label
			{
				get { return _connector.GetLabel(Index); }
			}

			private static Font __font= new Font("Calibri,Arial", 6.0f, FontStyle.Regular);

			/// <summary>
			/// Creates a new subitem used to visualise a connected child on the node.
			/// </summary>
			/// <param name="connector">The connector we want to visualise.</param>
			/// <param name="child">The child represented by the subitem. Can be null.</param>
			/// <param name="index">The index of the child in the connector. Also a null child has an index!</param>
			public SubItemConnector(Connector connector, BaseNode child, int index) : base(null, null, __font, Brushes.White, Alignment.Right, true)
			{
				_connector= connector;
				_child= child;
				_index= index;
			}

			public override SubItem Clone(Node newnode)
			{
				// the property does not need to be cloned it will be automatically generated
				return null;
			}
		}
	}
}
